I've always used 'amptrack.exe' 
It's a dos based track width and spacing calculator based on mil spec 275,
which is now defunct. However the replacement standard is less conservative
if anything.
The program used to be available on the Electronics Australia Magazine web
site. As EA is no more I doubt if it's there. So I have posted it to the
Protel Yahoo group file area for anyone that's interested.

http://groups.yahoo.com/group/protel-users/files/

Tom.

-----Original Message-----
From: Jeff Jolie [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, 4 July 2001 11:21 PM
To: ProtelEDAForum
Subject: [PEDA] Trace width & spacing for AC


Hi All,
Can someone point me to where I can find information on trace width and
trace to trace spacing to comply with UL and CE requirements. I have 3
phases and neutral I need to route (120VAC/2A or 220VAC/1A). I've been told
the requirements are different for phase to phase vs phase to neutral trace
spacing. Thanks for the help.

Jeff Jolie
[EMAIL PROTECTED]
New England Automated
Machine Engineering, Inc.
http://www.neame.com
860-526-3968
860-526-4108 fax

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